Parent's fur just about acceptable (8)
I believe the answer is:
passable
'just about acceptable' is the definition.
(passable means more or less acceptable)
'parent's fur' is the wordplay.
'parent's' becomes 'pa's' (pa can mean dad or father).
'fur' becomes 'sable' (sable is a kind of fur).
'pas'+'sable'='PASSABLE'
(Other definitions for passable that I've seen before include "Barely adequate" , "Good enough to be acceptable" , "examinations should be!" , "OK" , "not hogging the road" .)